Sökning: "unfertilized area"

Visar resultat 1 - 5 av 17 uppsatser innehållade orden unfertilized area.

  1. 1. Forest fertilization does not cause any long-term effects on tree growth or vegetation composition

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Yixian Chen; [2023]
    Nyckelord :density; ground vegetation; height; stem radial growth; legacy nitrogen effect; soil total N and C N ratio; tree;

    Sammanfattning : Forest fertilization is considered one of the most effective management options to improve forest productivity. In Fennoscandia, nitrogen (N) fertilization has been practiced for over 50 years and is normally added in the form of granules of NH4NO3 at least 15 years prior to the final harvest. LÄS MER

  3. 2. Optimizing nitrogen fertilization in ley : Evaluating the usage of N-sensor and other tools for optimized nitrogen fertilization

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Johan Johnsson; [2023]
    Nyckelord :nitrogen efficiency; optimized fertilization; SN value; unfertilized area; Yara N-sensor;

    Sammanfattning : Nitrogen is an essential nutrient for plant growth. It has several functions in the plant and a lack of nitrogen can cause severe yield losses. LÄS MER

  4. 3. Synergies of nutrient fractions for fertilization in agriculture

    Master-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)

    Författare :Linda Adjei; [2022]
    Nyckelord :Phosphorus; Wastewater; Polonite; molybdenum blue spectrophotometry; Fertilizer; Sunflower; Plant growth;

    Sammanfattning : A few countries are controlling the worlds phosphate reserves and this raw material is depleting at a faster rate. Most of the mined phosphate rock comes from Morocco and the Russia area which has unstable security. Studies shows that about 40% of potash export and 28% of nitrogen and phosphorus (P) fertilizer products comes from the Russia area. LÄS MER

  5. 4. Growth and management of Silver birch and Hybrid aspen in southern Sweden

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Mari Tuvikene; [2021]
    Nyckelord :Betula pendula Roth; ; Populus × wettsteinii Hämet-Ahti = P. tremula L. × P. tremuloides Michx.; ; plantation; young stand; simulation; fertilization;

    Sammanfattning : Nowadays, the changing climate and the risks associated with it urge us to re-evaluate our silvicultural practices. Due to the increasing demand for wood and good economy amongst other factors, Swedish forest landscape is dominated by two species – Norway spruce Picea abies (L.) Karst. and Scots pine Pinus sylvestris (L. LÄS MER

  7. 5. Effekten av gödsling på björkars (Betula pendula) specifika bladarea (SLA) och tillväxt

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för skog och träteknik (SOT)

    Författare :Gräsman Joel; [2019]
    Nyckelord :SLA; fertilization; leaf area; growth; birch;

    Sammanfattning : The number one highest growth-limiting factor in Swedish forests is nitrogen, because of that fertilization often gives a significant growth increase, wherever you are in Sweden. Specific leaf area (SLA) can be used as a standard measurement of how much resources a tre has to use to build up light absorbing leaf area of needles/leaves. LÄS MER